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首页> 外文期刊>Transactions of the Royal Institution of Naval Architects >ESTIMATION OF HYDRODYNAMIC COEFFICIENTS OF A NONLINEAR MANOEUVRING MATHEMATICAL MODEL WITH FREE-RUNNING SHIP MODEL TESTS
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ESTIMATION OF HYDRODYNAMIC COEFFICIENTS OF A NONLINEAR MANOEUVRING MATHEMATICAL MODEL WITH FREE-RUNNING SHIP MODEL TESTS

机译：自由运行船模型试验估计非线性操纵数学模型的流体动力系数

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摘要

Free-running model tests have been carried out based on a scaled chemical tanker ship model, having a guidance, control and navigation system developed and implemented in Lab VIEW. In order to make the modelling more flexible and physically more realistic, a modified version of Abkowitz model was introduced. During the identification process, the model's structure is fixed and its parameters have been obtained using system identification. A global optimization algorithm has been used to search the optimum values and minimize the loss functions. In order to reduce the effect of noise in the variables, different loss functions considering the empirical errors and generalization performance have been defined and implemented in the system identification program. The hydrodynamic coefficients have been identified based on the manoeuvring test data of free-running ship model. Validations of the system identification algorithm were also carried out and the comparisons with experiments demonstrated the effectiveness of the proposed system identification method.
机译：自由运行的模型测试已经基于缩放的化学油轮模型进行，具有在实验室视图中开发和实施的指导，控制和导航系统。为了使建模更灵活，身体上更具现实，介绍了ABKOWITZ模型的修改版本。在识别过程中，模型的结构是固定的，并且已经使用系统识别获得了其参数。全局优化算法已被用于搜索最佳值并最小化损耗函数。为了降低噪声在变量中的效果，考虑到经验误差和泛化性能的不同损失功能已经在系统识别程序中定义和实现。基于自由运行船型的机动测试数据识别了流体动力学系数。还进行了系统识别算法的验证，并进行了实验的比较证明了所提出的系统识别方法的有效性。

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    Haitong Xu; M. A. Hinostroza; C. Guedes Soares;

  • 作者单位

    Centre for Marine Technology and Ocean Engineering (CENTEC) Instituto Superior Tecnico Universidade de Lisboa;

    Centre for Marine Technology and Ocean Engineering (CENTEC) Instituto Superior Tecnico Universidade de Lisboa;

    Centre for Marine Technology and Ocean Engineering (CENTEC) Instituto Superior Tecnico Universidade de Lisboa;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 船舶工程;
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